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iOS App デザインパターン 基礎編
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Yusuke Ito
February 20, 2012
Programming
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iOS App デザインパターン 基礎編
Yusuke Ito
February 20, 2012
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Transcript
iOS App σβΠϯύλʔϯ #1 Yusuke Ito
http://www.flickr.com/photos/naotakem/4570128498 σβΠϯύλʔϯͷॏཁੑ
σβΠϯύλʔϯͷॏཁੑ ϑϨΩγϒϧɾָʹมߋՄೳ Ϧʔϯ(ΞδϟΠϧ)։ൃָ͕ʹ ίʔυͷՄಡੑͷ্ εύήοςΟԽͷࢭ ύϑΥʔϚϯεͷ্ɾϝϞϦϦʔΫͷࢭ ...͕ظͰ͖Δ
iOS AppͷΞʔΩςΫνϟ Model-View-Controller(MVC)Λ౿ऻ Rails(Ruby)ͷαʔόαΠυWebΞϓϦͱશ͘ҧ͏ (WebΞϓϦ→iOSҠߦͷਓҙ) Կ͕Ұ൪͍͔ۙ→NextSTEP ͦΜͳΜΔ͔!! iOSͷจԽΛΔඞཁ͕͋Δɻ MVCվΊModel-View-ViewController
ͦͷલʹMVCͱ Model View Controller ߋ৽ ߋ৽ มߋ ίϯτϩʔϥ͕શମͷϑϩʔΛ੍ޚ มߋ
iOS, UIKitͰ... Model View Controller UIViewController, UINavigationController... NSString, NSDictionary, NSArray...
UIView, UITableView...
Bad pattern #1 Model Controller View View View View Controller
Controller Controller View View View Model Model Model Model Model
Bad pattern #2 View View View View View View View
Model Model Model Model Model Model Controller View View
Better pattern Model Controller View Model Controller View Model Controller
View
UIKitجຊύλʔϯ ௨(NSNotificationCenter) σϦήʔτ(NSTableViewDelegateͳͲ) λʔήοτɾΞΫγϣϯ(UIControlͳͲ, -addTarget:) Ωʔࢹ(Key-Value-Observing) ※ͯ͢Objective-Cͷݴޠ༷Ͱͳ͘ɺ ύλʔϯͷҰछ KVOඍົ͚ͩͲ...
Case Study อ͔࣋Βߟ͑Δ ΦϒδΣΫτ͕ΦϒδΣΫτΛอ࣋͢Δ/͠ͳ͍ ͱ͍͏͜ͱ(ʹࢀরΛ࣋ͭ, Reference) ʹ͍ͭͯϧʔϧΛ࡞Δ ඞવతʹσβΠϯύλʔϯ͕ཁΔɾߟ͑Δ ϧʔϧΛ࡞ΕͦͷϧʔϧΛલఏʹͤ͟ΔΛಘͳ͍ ϧʔϧʹσβΠϯύλʔϯͰ͍͍
࠶ͼModel-View-ViewController Model: NSObject͔Β࡞Δ, NSDictionary, NSArray... View: UIViewͷαϒΫϥεͯ͢(UITableView, UIButton, UIScrollView...) ViewController:
UIViewController, UINavigationViewController, UITabViewController...
Model-View-ViewController ͦΕͧΕ͕͖࣋ͭͷ͖࣋ͭ Ͱͳ͍ͷ ҹ=อ࣋(ࢀর)
Model Controller View × × Model͔Βݟͯ... View࣋ͨͳ͍ ViewController࣋ͨͳ͍
ViewController࣋ͨͳ͍ Modelجຊ࣋ͨͳ͍ Viewʹදࣔ͢Δඞཁ͕͋Δ ͷ͚ͩ࣋ͭ Model Controller View × × View͔Βݟͯ...
ViewΛ࣋ͭ ModelΛ࣋ͭ Model Controller View ViewController͔Βݟͯ...
Model Controller View ࠶ͼ: อ͔࣋Βߟ͑Δ ·ͱΊ
Model Controller View Ͳ͏ͬͯࢀরͷແ͍ΦϒδΣΫτಉ࢜ ͷϝιουΛݺͼग़͔͢ σϦήʔτ Target-Action ௨ KVO ϝιου
(ϝοηʔδૹ৴)
σϦήʔτͷॻ͖͔ͨ ࠶ͼ: σϦήʔτύλʔϯ delegateͱ͍͏໊લΛΑ͘͏ dataSourceσϦήʔτͷύλʔϯ UITableViewUIScrollViewͷॻ͖͔ͨΛࢀߟʹ͢Δ
Target-Actionͷॻ͖͔ͨ ࠶ͼ: ͜Εύλʔϯ UIResponderΛܧঝ(Responder-Chainύλʔϯ) UIViewUIViewControllerUIResponderΛܧঝ ૹΔଆ(View): UIButton(<=UIControl) - addTarget:action:forControlEvents: TargetΛnilʹ͢Δ
ड͚ͱΔଆ(Controller): ↑Ͱ࣮ͨ͠actionͷϝιουΛ࣮͢Δ - (void)someAction:(id)sender
σβΠϯύλʔϯͷशಘ ʹจষͱಉ͡ ಡΉ: ࣗͷίʔυɾGithub(ଞਓ)ͷίʔυɾࣗͷ աڈͷίʔυ ॻ͘: ίʔσΟϯάɾϦϑΝΫλϦϯάɾ৭ʑͳύ λʔϯΛࢼ͢
͓͢͢Ίใݯ Apple ެࣜυΩϡϝϯτ WWDC2010-2011 ϏσΦͱεϥΠυ Dynamic Objective-C / Լ
/ ຊ iOS։ൃʹ͓͚ΔύλʔϯʹΑΔΦʔτϚςΟζϜ / Լ / ຊ
εϥΠυ http://bit.ly/xZ7NsF ίʔσΟϯάΨΠυϥΠϯͷ http://yusukeito.me/post/16447745113 https://github.com/novi Thank You ‼